Here are some interesting links I find recently:

• The GTD Mastery 100 by Duff
  This is a comprehensive checklist to measure how good you  are in implementing Getting Things Done. Go through the 100 criteria listed and add up your score. My score shows many room for improvements: 29. I hope yours is better.
• What Is Intelligence, Anyway? by Isaac Asimov
  This is a thought-provoking piece about intelligence written by no other than Isaac Asimov. Does intelligence mean high IQ? Isaac Asimov gave us insights about it by telling some short stories from his life.
• Productivity Boost: How to start your day at 5:00 AM by Kyle Pott
  Let’s face it, this is everyone’s first struggle everyday: how to rise early. This article gives us some good tips to become an early riser. My favorite: have a reason. It works well for me.
• Two Ways to Use Your New Found Early Morning Hours by Bert Webb
  Now that you are an early-riser, how should you spend your morning time? This article gives you the answer. The bottom line: fill it with the big rocks, the tasks which are most important.